diff options
| author | Wenjing Liu <[email protected]> | 2017-09-21 18:53:40 -0400 |
|---|---|---|
| committer | Alex Deucher <[email protected]> | 2017-10-21 16:42:55 -0400 |
| commit | e4ba6335cd91367f31978db1fc62d6bac0489672 (patch) | |
| tree | 1d52b99c01039277e403516c969b898b950690dc | |
| parent | fcbbe3da0ab65dc114937857fce81902e3fa2a97 (diff) | |
drm/amd/display: update link type to mst before topology discovery
[Description]
link type is not updated before mst topology discovery.
This causes issue when branch device response to link address after before
the start topology discovery event finishes.
[Solution]
update link type to mst before topology discovery
Signed-off-by: Wenjing Liu <[email protected]>
Reviewed-by: Tony Cheng <[email protected]>
Acked-by: Harry Wentland <[email protected]>
Signed-off-by: Alex Deucher <[email protected]>
| -rw-r--r-- | drivers/gpu/drm/amd/display/dc/core/dc_link.c | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/drivers/gpu/drm/amd/display/dc/core/dc_link.c b/drivers/gpu/drm/amd/display/dc/core/dc_link.c index 976f0f136f29..a58e61b6e9f9 100644 --- a/drivers/gpu/drm/amd/display/dc/core/dc_link.c +++ b/drivers/gpu/drm/amd/display/dc/core/dc_link.c @@ -496,6 +496,7 @@ static void detect_dp( } if (is_mst_supported(link)) { sink_caps->signal = SIGNAL_TYPE_DISPLAY_PORT_MST; + link->type = dc_connection_mst_branch; /* * This call will initiate MST topology discovery. Which @@ -524,12 +525,11 @@ static void detect_dp( if (reason == DETECT_REASON_BOOT) boot = true; - if (dm_helpers_dp_mst_start_top_mgr( + if (!dm_helpers_dp_mst_start_top_mgr( link->ctx, link, boot)) { - link->type = dc_connection_mst_branch; - } else { /* MST not supported */ + link->type = dc_connection_single; sink_caps->signal = SIGNAL_TYPE_DISPLAY_PORT; } } |